{- This file is part of funbot.
 -
 - Written in 2016 by fr33domlover <fr33domlover@riseup.net>.
 -
 - ♡ Copying is an act of love. Please copy, reuse and share.
 -
 - The author(s) have dedicated all copyright and related and neighboring
 - rights to this software to the public domain worldwide. This software is
 - distributed without any warranty.
 -
 - You should have received a copy of the CC0 Public Domain Dedication along
 - with this software. If not, see
 - <http://creativecommons.org/publicdomain/zero/1.0/>.
 -}

module FunBot.Locations
    ( lookupLocal
    , lookupGlobal
    , lookupBoth
    )
where

import FunBot.Types
import Network.IRC.Fun.Bot.State (getStateS)
import Network.IRC.Fun.Types (Channel)

import qualified Data.HashMap.Lazy as M (lookup)

lookupLocal :: Channel -> LocationLabel -> BotSession (Maybe Location)
lookupLocal chan label = do
    chans <- getStateS $ stChannels . bsSettings
    return $ M.lookup chan chans >>= M.lookup label . csLocations

lookupGlobal :: LocationLabel -> BotSession (Maybe Location)
lookupGlobal label = do
    locs <- getStateS $ stLocations . bsSettings
    return $ M.lookup label locs

lookupBoth :: Channel -> LocationLabel -> BotSession (Maybe Location)
lookupBoth chan label = do
    mloc <- lookupLocal chan label
    maybe (lookupGlobal label) (return . Just) mloc
